Improvement in steam-boilers



' ZSheets-Sheet l. C. W. REED.

STEAM-BOILER. N0.171,861. Patented Jan. 4, 1876.

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N.PEI'ERS, PHOTO-LITHOGRAPHER, WASHINGTQN. D C.-

-2S11eecsSheetZ. I C. W. REED.

STEAM-BOILER. N0.171,861. Patented Jan. 4,1876.

N. PETERS FHOTO-LITHOGRAPHER, WASHINGTON. D- C UNITED PATENT Prion OULLIN w. REED, OF GHAGR-IN FALLS, OHIO, AssIcnoa o ONE-HALF s RIGHT TO H. n. WIOKQFF & son, or SAMEYVFKLAOE.

lMPRQVEME'NT IN STEAM-BOILERS.

Specification forming part of Letters Patent No; 171,861, dated January 4,1876; application filed November 22, 1875.

To all whom it may concern Be it known that I, CULLIN W. REED, of

. Chagrin Falls, in the county of Ouyahoga and portion of the boiler, and to economize and utilize the whole or greater part of the heat generated thereby, for the purpose of heating the water and converting thesame into steam.

My invention consists in a boiler composed of two annular chambers, one within the other, and communicating with each other at the bottom by means of a suitable pipe, or of anannular chamber within a sheet or jacket, the said inner chamber forming the fire-potof the boiler, and communicating with an annular steam-chamber above by means of a series of tubes or their equivalents, the space between said steam-space and the inner chamber forming a flame-space or combustion-chamber, and

the inner portion of the annular steam-chant her a cokingchamber, into which the fuel is fed from a magazine above the flame-space or combustion-chamber of the furnace communicating, by means of suitable flues, With the escape-flue of the boiler, in such a manner as to consume and burn the smoke and other. combustible gases generated from the burning fuel, and utilize the same, as hereinafter more fully set forth.

In the drawing, Figure 1 represents a view, partly in elevation and partly in section, of my improved boiler. Fig. 2 represents a partial top View and a horizontal sectional view of the boiler, and Fig. 3a vertical sectional view of the same.

The letterA represents the outer portion of the boiler, consisting of an annular chamber constructed of boiler-iron or other material possessing the requisite strength. Said annular chamber is supported upon an annular base-plate,B, and within it is located a smaller annular chamber, O,the two being connected tion. steam-chamber constructed like the other porter to circulate freely from one to the other. This inner chamber forms the, lire-box of the furnace, its central space being provided at the bottom with a grate, E, below which is located an ash-pit, F, of any desired construc- The letter G represents an annular tions of the boiler, of boileriron, or other material of requisite strength, and provided with an eduction-pipe, g, the said chamber, in this instance, being located directly above the inner annular chamber 0, and just at the top of the outer chamber A, and being connected with the chamber 0 by means ofaseries of pipes, H, the spaces between said steam-chamber and chamber G, and between the connecting-pipes H, forming a flamespace above the fire-pot, in which the smoke andcombustible gases of the coal are thoroughly consumed and burned. Said tlame'space communicates with the escape flue of tie boiler (represented by the letter K) by means of a short fl'ue, L,

which is provided with a damper, M, and by two tortuous flues, N, extending from the top of the annular inner chamber 0 down through said chamber, and entering the bottom of said escape-flue,vas shown. The damper M is so arranged that when thrown'back, to open the flue L, it will close the escape-fluebelow said flueL, and cause the products of combustion to pass directly into said escape-flue K, in order to provide for starting the fire ;'and when closed, as shown in Fig. 3, will-cause the products of combustion to take their course through the tortuous flues N, as indicated by the arrows. Above the-steam-chamber G is located a cylindrical, magazine, (;r, the lower end of which sets in the upper end of the inner portion of said chamber G, said magazine being provided with a series of air-flues, P,

Y provided with dampers, if desire'd,which flues enterjust above its lower end, and serve to admit air to the coking-chamber R, which lies between the dotted lines 1 4", (shown' in Fig. 3,) being formed by the interior portion of the steam-chamber G and that portion otltlie magazine below the dues P. 5

Upon the top of the outer annular chamber is secured a .domeshaped cover, S, which at the bottom by means of a tube, D, Fig. 1, 'or other suitable means, which; allows the waservesto oonfinethe heat arou d the steamchamber; aiitl*pi ev'ent*itsiescape. magazine is provided with removable coversT T,

in order that it may be tilled. at convenience,

the space between the two being connected with'the escape-fluebymeansot' a smalltube, to carry otf any light 11 gases that may col-i U. lect in said space, and prevent accidents.

The water is fed into the outer casing or chamber of the boiler through the pipe y,

from a tank, W, in which it is previously heated by the exhaust-steam of the engine.

, On entering the outer casing the heat is fur; ther increased, "after which the water passes into the inner chamber 0, whereitisjstillfurther heated, and is converted into steam in the steaimchest Gr,,the hottest. portion of the boiler, by which means dry steam is always produced, which "is a most important result in thegenerationof steam.

Theletter Z represents adoor through the outer cylinder o'r shell, for the purpose. of providing access tothe combustion-chamber. The letter arepresents an air-chamber, sur 1 rounding the innerwater'chamber, that forms I the fire-pot, forming a dead-air space, Where:

by the heat is retained between the inner and outer portions of the boiler. The ring a, at

L the top. of: said airchamber, performs an im portant function by forming a partitiou between'the flame or combustion. chamber and {its dead-air chamber, wherebythe heat is,

Tito a; greater extent, concentrated upon the i upper or superheatin g portion of the boiler. j

F It is evidentthat the detailsof my im provedboiler can be niaterially varied 'with outlchangingits nature, the invention con; sistin'g, essentially, in a boiler provided with J Y a fire-pot, a cokingchamber, and a flame chamber between the two, as set forth.

i For instance, the outer annular cylinder maybe madeto serve the purpose of a heat- [wing-tank simply, the feed-water being introduced into the same from any proper source, and pumped from said outer annular chamber into the inner annular chamber by means r ofasuitable pump interposed at any convenient point in the col inecting-pipe D, which,

in -such case, should be provided with a suitable valve to cut off communication between the twoannular chambers, and prevent steam pressure in. the outer one when desired; or the outer annular chamber may be altogether omitted, and asimple jacketor shell substituted for the same, in which'case thefeedwater will be pumped directly into the inner chamber from a suitable tank or other source.

The boileras thus constructed, besides the advantages above enumerated, possesses many others, such as extreme simplicityot' con: strnctiomiendering the taking apart of the --i=""same for repairs or cleaning an operation of comparatively little time or. trouble, as the outer annular cylinder,tafter uncoupling the connecting-pipe, or the outer shell when em:

ployed maybe lifted off the interior works, leaving said parts thoroughly open tor inerect o e. inn mber nd. ste m-ch "being provided with suitableuman}lioles,' by mean'sot' whichentrancetothe samei'naybe -efl'ected, and by mounting the base-plate upon wheels the'whole apparatus is made readily portable;

. In ,case the apparatusis to be placed in positions that would interfere with. the natural draft, any convenient blowing apparatus may .be employed-and connected with the draftapertures either below the fire pot, or those asmay be desired.

entering throughthe magazine, or with both,

" Having thus [described invention, what I I claim, and desireto secure by Letters Patent, 1si i 1. The combination in a-steam boiler or gen.

erator' of a .water-chamber,the central space of which forms the fire-pot of the boile r and a steam -chest, the central space of which forms a coking-cham ber,- the "two being connected by a series ot'tubes, and the interven X ing space forming a combustion-chainher, in

which the gaseous portions of the; fuel. are

concentrated 'andconsumed, substantially as a described.

- Ina steam-boiler, thecombination ofthe 1 fire-pot and coking -chamber, constructed to have an upward and downward draft, respect ively, with anintermediate combustion-chamber communicating with the escape-fines. in which chamber the flames of theburning tfuel I are concentrated for the purpose of intensifying the heat around the steam-chest or that portion. of the boiler in which the steam is finally generated, in .order to produce dry steam, substantially as andfor the purposes set forth. i

3. The combination of the annularchamber N, the com bastion-chamber above the same,

and tortuous flues leading from said combustion-. chamber to the discharge-flue K, sub- I stantially as andfor the purpose described.

4.. The combination in a steam-boilerot the i steam-chamberG andmagazine G, provided with fines D, forming a coking-chamber above the combustion-chamber, and leading into the same, substantially as and forthe purposes set forth. l 1

5. The combination of the outer the inner cylinder, the steam chest or chamher, the connecting-fines, and the intervening combustion-chamber, substantially as herein set'forth. u l 3 6. In combination with the magazine G, the flue U leading to the escape-flue of the furnace, for, leading 011' the light gases that w may collect between the removable. covers T T, as and for the purpose hereinset, term,

In testimony that I claim the foregoingI have hereunto setmy hand in the presence of the subscribing witnesses. u

l a l l y GULLIN Witnesses: i A. H. Nonnrs, Jos. L. CooMBs. 

